San Antonio (/ˌsæn ænˈtoʊnioʊ/ SAN an-TOH-nee-oh; Spanish for "Saint Anthony"), officially the City of San Antonio, is a city in Texas, United States. The city is the seventh-most populous in the United States, the second-largest in the Southern United States, and the second-most populous in Texas. It is the 12th most-populous city in North America, with 1,434,625 residents in 2020.
Founded as a Spanish mission and colonial outpost in 1718, the city in 1731 became the first chartered civil settlement in what is now present-day Texas. The area was then part of the Spanish Empire. From 1821 to 1836, it was part of the Mexican Republic. It is the oldest municipality in Texas, having celebrated its 300th anniversary on May 1, 2018.
Kaifeng, known as Bianzhou and Bianliang in ancient times, is a prefecture-level city in Henan Province. It is a cultural tourism city approved by the State Council and one of the central cities in the core area of the Central Plains urban agglomeration. By 2018, the city had jurisdiction over five districts and four counties, with a total area of 6266 square kilometers, a built-up area of 129.93 square kilometers, a resident population of 4.5649 million, and an urban population of 2.23 million, with a urbanization rate of 48.9%. Kaifeng is located in the hinterland of the Central Plains, the shore of the Yellow River, adjacent to Zhengzhou in the west. Kaifeng Free Trade Zone is one of the three major free trade pilot zones in China (Henan). It is the first batch of famous national historical and cultural cities with a history of more than 4100 years, including Xia Dynasty, Wei State in the warring States period, Hou Liang, Hou Jin, Hou Han, Hou Zhou and Song Dynasty in the five dynasties.